ingersoll



Feb. 2, 1954 R. c. INGERSOLL 2,667,853

AUTOMATIC RECEIVING AND EJECTING MEANS FOR PRESSES Filed Dec. 16, 1948 3Sheets-Sheet 1 f E; AZ .Bx c 'D) E f fnvenim 1954 R. c. INGERSOLL p, 6 83 AUTOMATIC RECEIVING AND EJECTING MEANS FOR PRESSES Filed Dec. 16, 19483 Sheets-Sheet 2 Feb. 2-, 1954 R. C. INGERSOLL AUTOMATIC RECEIVING ANDEQECTING MEANS FOR PRESSES 5 Sheets-She't 3 Filed Dec. 16, I 1948Ina/671127 fig C [7296713011 This reshaping press may be of anywell-known type and, as shown in the drawings, may comprise a bed Illhaving a bolster ll thereon which supports the convex die 12 that issecured to said bolster by suitable clamp means I3. Vertical columns Mof desirable construction are positioned at opposite sides of the bed Inand extend upwardly above the die [2 to provide uides i5 for the ram l6which is reciprocated toward and away from the bed of the press by anysuitable or well-known means. The ram It carries on its lower portionthe concave die I! which conforms with and is generally a counterpart ofthe lower shaping die [2. At its central region this concave die I! isprovided with a tapered pin [8 of suitable cross-section which isadapted to fit into a similarly shaped. central bore l2a in the die I2,for the purpose of centering the disc which has been deposited onsupporting rails later to be described. It is here stated that the dischas a suitably shaped opening :0 (Fig.3), the dimensions of whichcorrespond generally with the diameter of pin [8 for assisting in thecentering of the discs in the reform press.

The portion of the disc handling arrangement which deposits the disc onthe lower die 12 preferably comprises swinging means, between thedies,'which may receive the disc from a conveyor and are arranged tosupport the disc above said die [2 and at the proper time these saidswinging supporting means are automatically withdrawn from the disc.This arrangement comprises a pair of horizontally extending angle metalrails arranged parallel to each other in a proper plane above the dieI2, the flanges of such rails defining respectively horizontal elongatesupports l9 and upstanding abutments 20. Each of these rails has a pairof lugs 2| projecting in an outward horizontal direction away from theaxis of the reciprocal movement of the ram. At their outer portionsthese lugs are apertured to receive horizontally extending rockshafts'22, and at an end of each rock-shaft there is a suitable cam meanswhich preferably takes the form of a radially extending arm 23 whichdefine effective means whereby the rockshafts are rotated.

, The free ends of arms 23 have lateral pins 24 which are adapted to beengaged by a cross bar 25 carried by the lower portion of the ram bymeans of straps or hangers 26. Each rockshaft 22 is rotatably mounted inaxially. bored journaling bosses 21 on the adjacent ends of a pair ofhorizontal rods 28 arrangedin suitably spaced parallel relation to eachother and extending through guide bearings in the standards I4, as shownin more detail in Fig. 3. When the ram carried bar 25 contacts and movesthe arms 23 in a downward direction, the rock-shafts 22 will becorrespondingly rotated and the supporting rails will be lowered by aswinging movement to the positions shown in broken lines in Fig. 2. Thisdownward movement of the rails withdraws them from the disc X and suchdisc will be deposited upon the top of the convex die l2. During thedownward movement of the ram the guide pin l8 will be entered in theaxial opening at of the disc to centrally position the disc relative tofixed die I2.

. When the ram is being retracted from the die l2, the actuating arms'23 are adapted to follow the movement of the bar 25 by reason of thefact that rock-shafts 22 are automatically returnable to their normalpositions where. they receive the discs. This automatic function ispreferably effected by means of coiled springs 29 which surroundrock-shafts 22, one end of each spring being looped around a restrainingpin 36 projecting from the rock-shaft and the other end of each springbeing anchored to a rod 28, in any suitable or usual manner. Thisautomatic return of the rock-shafts and the rails supported thereby isadapted to swing the rails back to their initial position where they areready to receive the next disc.

The rod 28 of each pair are mounted for 1ongitudinal sliding movement inthe columns 14 in order to alter or vary the distance between the rails,thus to permit a change-over when the press is to be operated forreshaping discs of larger or smaller dimensions. This adjustability ofthe arrangement is adapted to be quite readily accomplished by providingracks 3| on the outer end portions of rods 28, such racks being engagedby pinions 32 mounted in housings 33 through which the rods 28 pass onthe outer Walls of the columns i4. These pinions 32 are secured torotatable shafts 3A journaled in the housings 33, and said shafts may berotated by means of hand wheels 35 at the ends of said shafts. Means inthe form of looks or clamp brakes 36 surround the shafts 34 and may bereadily released by the operator to permit rotation of the shafts foradjusting the rods 28 as Well as the rails supported at the inner endsof said rods.

As may be seen in Fig. 3, the disc-supporting flanges [9 of the railsare provided with segmental recesses or notches 31 defined by an arc ofa circle inscribed from the axis of the press.

These recesses or notches 31 will assist in clearing the disc from therails quickly and permit the rails to clear the lower die 12 when therails are withdrawn from the disc.

After the ram starts its upward retractive movement away from die [2, itis desirable that the disc X be dislodged from such die to discharge thereformed disc upon a suitable conveyor assembly 38 (Fig. l) whichreceives the disc and carries it away from the press to the next stationof the processing line. The remaining portion of the disc orblank-handling mechanism, which operates in synchronized relation withthe ram, includes means which are closely related to the positioningportion of the mechanism and are adapted to remove the reshaped disc.This latter means comprises a reciprocal bar 39 which is arranged radialto the axes of the dies of the press and has a cross-member 40 at itsradially inner end which i adjacent the margin of die I 2. As seen inFig. 1, the bar is positioned in a plane extending oblique to thehorizontal so that it lies approximately tangent to the curvature of die12. This reciprocal bar 39 i guided in a plate 4| which is secured in anupright position to the side of the bolster l l and has a verticallyelongated recess or slot 42 in its upper portion through which the bar39 passe and in which said bar is adapted to be reciprocatedlongitudinally. At the lower portion of the slot or recess 42 there is acam block 43 carried in an adjustable bracket 44 on the inner side ofthe plate 4|, said cam block being adapted to provide a definite guidefor the bar 39 during its sliding movement.

The arrangement for operating the bar 39 in a reciprocal manner todislodge the disc blank comprises bell-crank 'means which preferablyconsistsof a long arm 48 secured to a rock-shaft mew-menglatternisajourna'led in bearing bosses' fiflw at ztheslcwen endseaof:suitable:.-hangers:.5.| thatare:

secured to the bolster alongside:thexplateg tlas bestshowminx Fig;2.:.The1r0ckeshaft .49zealso carriesza: short; arm 1512 which has:pivotaleonnection ataiits. outers-x end: with a:verticallyiireciprocala plunger e'COdai 53 thatiiis. arranged ito:operate? ithe': disc displacing mechanism. Armxaiiqoiythebbelleicrankzmeansahassits swinging. end: portion-zoperativelyziconnected. by:a. pivot; pin-:,,54- to :the: other,

region .of ;the reciprocal bar 39: for: moxzingzsaid'f baninibotlii a.forward: and: a; return direction;-

with" respectizto 'the'idie and: disc-rthereon: The;

pivot: pin: 54 .may. be: selectively insertedsthrough;

anmoneof. :aseries of "holes; .55a1nade in the outer, region: of. the:bar,'.. thusfipredeterminings the: -dis. tanceewhich isto beitraveledrbysaid-bariand its.

cross-member 40:; Itztwill ,be: apparent that this. arrangement. isadapted; to "dislodge discsr having;

diffierent;dimensions:;

Thee-plunger rod 53, 1 whichis carrangedv verti= callyr, alongside oradjacentr-one: of-rthe: columns.

14-; has ;-its upper" end? pivotally connected as" .at: 45iwith: the end;of a horizontal L-arm aof': a bell: cranlzzcarried Lon :a rock-shaft114:1 Suitableibearing brackets 55,,.which:are..anchored to the= c011-1111111114; provide journals; for the rock-shaft '41. Theuotherbelli-crankaarm .151 extends; in; an up.- ward:directionzadiacentributout .of 'conta'ctwithi asideiiaceiofa'the:pressram and"..carrie aroller58 on itsrrupper*-end;..:. This: arm 510i the bellcranlei'sadapteditoheioseillated torockthe shaft 41 BJId-ZOPEIBvtB'JthBTbeHfiCI'aDk, andthereby. transmit:motion-through ithe medium of plunger rod 53"torthezzdisc..displacin-grbarrtfis; Oscillation ofthe bellecranltarm-fii:is..-effect ed: byi;positively operated: mechamsmrwhichzmays take the.form of eamzmeanse defined. by; a: channeled: guide which. ismounted'upontheiadiacentz'face .cf thejram I s.

Said guider: comprises. a; long: straight vertical portion 59andzz-ashort 'offset;- =lower portion 8!! which are :connectedcto; eachotherrby; an. oblique region; Bl .Y the cross-sectional. dimension" ofsaid guide" channel beings sufficient-to accommodate the-roller 58therein;

When: the reciprocal-cram; I 6 is in 1 its lowered position; the roller.5 Bewillbe int the-1 upper portion. 59:.of the guiderchannel: Asutheramapproaches the:- end of'tits'. withdrawarmovemens thezrol-le'r.58.;is; first: engaged in the intermediate cam': region:. i ofthesxguide channel and then: reaches-the; ofiset region 6 i1. Thiseffects a' swing-'- ing,:ojlthezibellecrankzarm 5.1 ftoward the right torock. thee-shaft il andllift the other bell-crank arm 46; which in turnraises plunger rod 53. Them throug h the.-.;instr-umentality ofbell-crank arms 52 and 48, the ,reciprocal...bar..39 will be shiftedradially inward toward the disc on the die iii The distance Which istraversed bythe reciprocalibar 39 .and its cross-member- 40 -istothercentralregion of die l2 as-shown by dotted lines in=.Figs.'. 1 and.3 and Wil-l be sufiieient-to dislodge-the reshaped disc -beyondthe-central area. of the lower. dieto permit said disc to slideoif-s'aiddie :and .be. received by the conveyor '38.

Means arepro ided for definitely locating the discs on thet-rails-lsandlfl' so -that such discs willbe. axially aligned with" theupper and:lower dies i land -I 2 respectively,- andprior to operating the-railsto deposit-a disc on-tlie-lower die. Said means may comprise suitableassemblie each including a stop member 66 and a limit switch 66a,attached to and carried by the rails 19 and so as to project inwardlytoward each other in the space between said rails. As illustrated intherailszlezanckzflrsuch adjustments?being readszilyeefiectedcbyreleasing: thesattaching meansf or; bolts:fiazthershankswof:whichvpassathroughgslotss 691.-.- ;Theaassembiies are-then moved-1ongitidinally byithe;setiscizewss'lmicarriedzingblocksrl gtoethce desired:positionmwhemtheyz aredocked-m ightr-- eningi thei. bower-16.8: ,Thescad ustments-.- of; the; assemblies area-made preferably.after-athearails haremeenzadjilsted@toward or from eachpthemby: the rackand gear arrangement-on.they railsum; DOItiTIgTiI'DGS'iZBR-ETheclimitisw-itches Elia-{maybe any convenient ,zorcwelleknownz designand-1.- each; has-.za .detentfifibsvhich isadaptemto be engagedaby;::the.=: disc: edge; toztrip; thezsWiWh-ior. .controlr-fl ling:thezmechanismzwhioha operates; the press- 3 Conductors wand brlead fromtheilimitiswitehstm theaelectricai elements? .(notshown)rW-hiChinitiate;-. thfikQDBl'fitiOIlaiDf the? reformxpressgn-tThis-apron videsa atsafvety-feature whichqisixdesirablerin Mica/':tomati'c mechallflfhilniof-zthis20115113356131:

whileithis inventionhas;beemdesoribeddnidem tailinits'presentaprefermddormer:embodimenta it. will-zbeaapparenttopersonssskiiledl-inithegart;, aftenunderstanding; therimprovements;that-yar ious changesrand" modificationsscmaya be madee thereinzwithoutdepartinggiromtheaspiritor:sco thereoi; It: is aimedeini theeappended'aclaims-etc COYEX'?-2,11Z.SUChfehal'nges aandrzmodifications Y What isclaimedds-to 1; A press; yfor-i-forming g-discs having; concave-r;convexacrossssection com-ari in fifc nTifi e 's'fplrl receiving-a.blankin ramxmevablenim directions: towardand retractableriromvsaidgdie,and acon-a cave dieion said: ram: confrontingasaid-i convex; die, in:combination: with; 3119.83 ,ector. assembl-v z;

.. comprising-c a reciprocal bam;meanw rasui na:

said zbarsinahlanenapproximately;tangent?to the;vvorkiiace-aofisaid;convex; dieaixa cross memberion -z thespontionsof:sjaidirecinrocal than. iadiacenti said-l convexsdieiomengagementzwith',aiormedzblanki on;saimconyexzdie;hell?cranksmeanszmountedecniafixedzportienzofisaidmresseoneaarmzofisaid belle;

semblw and: dislodge";thesblankaonxsaid: convex;

2. .A press:- tor: formingsdiscslhaving'xconcavosconvex. cross-section:- comprising an convex? dieza font receiving ablank;a-ramzmovablmtoward: and res:

4 tractable 'fromr said die; and a concave die' 'on said ram confrontingsaid convex die, in combination with an ejector assembly comprising, areciprocal bar; means for guiding said bar in a plane approximatelytangent to the work face of said convex die; a cross member on theportion of said reciprocal bar adjacent said convex die for engagementwith a formed blank on said convex die; bell-crank means mounted on afixed portion of said press, one arm of said bellcrank being connectedto said reciprocal bar; a plunger rod reciprocal vertically alongsidesaid press and having its lower portion connected to another bell-crankarm; means defining a vertically extending guide channel on said ram,said channel having an ofiset lower region; swingable means pivoted on afixed portion of said press adjacent said guide channel and beingconnected to the upper region of said plunger rod, said swingable meanshaving a member engaged in said guide channel, the retractable movementof said ram being effective to move said swingable means in a directionto raise said plunger rod thereby to operate said ejector assembly anddislodge the blank from said convex die.

3. A press for forming discs having concavoconvex cross-sectioncomprising a convex die for receiving a blank, guides extending abovesaid die, a ram movable toward and retractable from said die, and aconcave die on said ram confronting said convex die, in combination withan ejector assembly comprising, a reciprocal bar; means for guiding saidbar in a plane approximately tangent to the work face of said convexdie; a support on which said reciprocal bar is movably mounted; across-member on the end portion of said reciprocal bar adjacent saidconvex die for engagement with a formed blank on said convex die; afirst bell-crank mounted on a fixed portion of said press; meanssupporting and adjustably connecting an end region of said bar to afirst arm of said bell-crank; a vertical plunger rod reciprocallongitudinally alongside said press and having its lower portionconnected to a second bell-crank arm; means on said ram defining avertically extending cam guide channel; a second bell-crank pivotallymounted on a stationary portion of said press, one arm of saidbell-crank being connected to the upper region of said plunger rod; anda roller carried by the other arm of said second bell-crank incooperative association with said cam channel, the retractable movementof said ram being effective to rock the bell-crank associated with saidcam channel, thereby to move said plunger rod in a direction to rocksaid firstmentioned bell-crank for operating said ejector assembly anddislodge the blank from said convex die.

4. A press for forming discs having dished cross-section comprising afixed convex die, a reciprocal ram movable toward and retractable :fromsaid convex die, and a concave die on said ram, in combination with anintermittently operable ejector assembly comprising, a reciprocal blankengaging member; means for guiding said member in a plane tangent to andacross the work face of said convex die; a lower bell-crank pivotallymounted on a stationary lower portion of said press, a first arm of saidbell-crank being operatively connected to said reciprocal member; and anupper bell-crank pivotally mounted on a stationary upper portion of saidpress, a first arm of said lower bell-crank being operatively connectedto a first arm of said upper bell-crank; and means onsaid ramcooperating with a second arm of said upper bell-crank and operative inre- 5. A press for forming discs as defined in claim' 4 wherein means onthe ram define a grooved cam member, and the'second arm of the upperbellcrank is cooperatively associated with the groove in said cammember. 7

6. A sheet metal forming machine comprising a bed having a fixed arcuatedie for supporting a blank; vertical guides at the sides of said fixeddie havin portions extending above the horizontal plane thereof; amobile ram reciprocal in said guides and having an arcuate die adaptedfor co operation with said fixed die; an automatically reciprocableintermittently operable member having a portion in a plane tangent tothe arcuate face of said fixed die; a vertically adjustable cam block onsaid bed supporting and guiding an end region of said reciprocablemember during movement to and from said fixed die; a bell-crank having afirst arm adjustably connected to and supporting the end region of saidreciprocatory member which is remote to said fixed die; a verticallyextending reciprocal rod connected to a second arm of said bell-crank;and means actuated by said ram during withdrawal movement thereof tomove said rod in a direction to actuate said bellcrank thereby to movesaid reciprocable member tangently across the arcuate surface of saidfixed die thereby to dislodge'a blank therefrom.

7. A machine for forming dished cultivator discs comprising a bed havina fixed die of convex cross-section for supporting a disc ofconcavoconvex section; a mobile ram reciprocal to and from said fixeddie; a die of concave cross-section on said ram adapted for cooperationwith said fixed die; an automatically reciprocable intermittentlyoperable member having a portion extending tangent to the arcuate faceof said fixed die; cam means on said bed close to said fixed die andsupporting the adjacent end region of said reciprocable member; abell-crank having a first arm adjustably connected to and supporting theend region of said reciprocable member which is remote to said fixeddie; a vertically reciprocal rod connected to a second arm of saidbell-crank; and means actuated by said ram adapted during withdrawalmovement of said ram to move said reciprocal rod in a direction to rocksaid bell-crank thereby to move said reciprocable member in a planetangent to said fixed die for engagement with an edge of the disc fordislodging said disc.

ROY C. INGERSOLL.

References Cited in the file of this patent UNITED STATES PATENTS

